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/*
**********************************************************************
* Copyright (C) Miroslav Lichvar 2016-2018
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
**********************************************************************
*/
#include <hwclock.c>
#include "test.h"
void
test_unit(void)
{
struct timespec start_hw_ts, start_local_ts, hw_ts, local_ts, ts;
HCL_Instance clock;
double freq, jitter, interval, dj, sum;
int i, j, k, count;
LCL_Initialise();
for (i = 1; i <= 8; i++) {
clock = HCL_CreateInstance(random() % (1 << i), 1 << i, 1.0);
for (j = 0, count = 0, sum = 0.0; j < 100; j++) {
UTI_ZeroTimespec(&start_hw_ts);
UTI_ZeroTimespec(&start_local_ts);
UTI_AddDoubleToTimespec(&start_hw_ts, TST_GetRandomDouble(0.0, 1e9), &start_hw_ts);
UTI_AddDoubleToTimespec(&start_local_ts, TST_GetRandomDouble(0.0, 1e9), &start_local_ts);
DEBUG_LOG("iteration %d", j);
freq = TST_GetRandomDouble(0.9, 1.1);
jitter = TST_GetRandomDouble(10.0e-9, 1000.0e-9);
interval = TST_GetRandomDouble(0.1, 10.0);
clock->n_samples = 0;
clock->valid_coefs = 0;
for (k = 0; k < 100; k++) {
UTI_AddDoubleToTimespec(&start_hw_ts, k * interval * freq, &hw_ts);
UTI_AddDoubleToTimespec(&start_local_ts, k * interval, &local_ts);
if (HCL_CookTime(clock, &hw_ts, &ts, NULL)) {
dj = fabs(UTI_DiffTimespecsToDouble(&ts, &local_ts) / jitter);
DEBUG_LOG("delta/jitter %f", dj);
if (clock->n_samples >= clock->max_samples / 2)
sum += dj, count++;
TEST_CHECK(clock->n_samples < 4 || dj <= 4.0);
TEST_CHECK(clock->n_samples < 8 || dj <= 3.0);
}
UTI_AddDoubleToTimespec(&start_hw_ts, k * interval * freq + TST_GetRandomDouble(-jitter, jitter), &hw_ts);
if (HCL_NeedsNewSample(clock, &local_ts))
HCL_AccumulateSample(clock, &hw_ts, &local_ts, 2.0 * jitter);
TEST_CHECK(clock->valid_coefs || clock->n_samples < 2);
if (!clock->valid_coefs)
continue;
TEST_CHECK(fabs(clock->offset) <= 2.0 * jitter);
}
}
TEST_CHECK(sum / count < 2.4 / sqrt(clock->max_samples));
HCL_DestroyInstance(clock);
}
LCL_Finalise();
}
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